Doubling Your Money This calculator demonstrates the power of compound interest. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content The Cost of Procrastination Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time. How Big is Money? Learn a little about worldwide currency in this fun infographic Historical Inflation This calculator shows how inflation over the years has impacted purchasing power.